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What kind of adhesive is used for car spoilers?

2 Answers

DiAmelia

08/28/25 4:05am

Car spoilers use 3M double-sided adhesive tape. 3M tape provides strong adhesion for spoilers, but illegal modifications are against the law. There are two methods for fixing car spoilers, generally categorized as destructive installation and non-destructive installation. Non-destructive installation involves directly using 3M tape for adhesion; destructive installation requires drilling holes in the trunk lid and then securing the spoiler with screws. This method provides the strongest hold, but if not done properly, it can easily lead to rusting of vehicle body panels and requires higher craftsmanship. Spoilers installed with adhesive cannot pass annual vehicle inspections. Whether adhered or reinforced with nuts and bolts, spoilers are considered illegal modifications to the vehicle's appearance, which is a violation of the law. Such modifications can affect road safety and pose threats to other road users. Vehicle modifications must strictly comply with national laws and regulations, which clearly specify requirements for both appearance and performance modifications. Generally, owners can replace front and rear bumpers or grilles, but the size of these components must not exceed the original vehicle dimensions. For color changes, except for certain prohibited colors, owners simply need to register the new color with the vehicle management office.

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MacKendra

09/10/25 2:37am

I recently added a spoiler to my old car using 3M's heavy-duty double-sided tape, and the result was fantastic. That tape is specifically designed for car modifications, with strong adhesion that won't fail even at 100 mph. During installation, remember to clean the car's surface thoroughly—use alcohol wipes to remove grease and dust, then cut the tape to the right size and press it firmly onto the back of the spoiler for a secure bond. I've tried it twice and found it much simpler and safer than liquid adhesives, saving me the hassle of dealing with tools. However, if the spoiler is too heavy or the surface isn't flat, it might loosen over time, so regular checks are necessary. This tape is affordable and widely available at auto shops, usually costing just a few bucks. Keep in mind: poor adhesion can affect driving stability—at best causing noise, at worst leading to detachment and accidents.

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